science
Grade-9
Easy
Question
The displacement of the body whose v-t graph is given below is ____ m.
Hint:
2000 m
The correct answer is: 2000
Given that,
Initial velocity, u = 20 m/s
Final velocity, v = 60 m/s
Time taken, t = 50 s
The acceleration was found to be 4/5 m/s2
From the second equation of motion, we have
s = ut + ½at2
Or, s = 20 x 50 + ½ (4/5) (50)2
Or, s = 1000 + (2/5) (2500)
Or, s = 1000 + 1000
Or, s = 2000 m
Therefore, the maximum distance covered by the ball is 2000 m.
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